Lubricator



(No Model.)

W. M. EVANS 8v J. G. GORDNER.

LUBRIGATOR.

No. 353,671. Patented Dec. '7, 1886.

UNITED STATES PATENT QEFICE.

W'ILLIAM M. EVANS AND JOHN G. CORDNER, OF OSKALOOSA, IOYVA.

LUBRI SPECEPICATION forming Application filed May 11, 1886.

CATO R.

Serial No. 201,851. (No model.)

To all whom, it may concern:

Beitknown that we, WILLIAM M. Evans and J OHN G. Oonnnnn, of Oskaloosa, in the county of Mahaska and State of Iowa, have'in'vented certain newand useful Improvementsin Lubricators; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in theartto which it appertains to make and use the same.

Our invention relates to an improvement in lubricators, and more particularly in that class of lubricators which are employed to force stiff oil or grease onto journals and other bearings.

Hitherto it has been customary to provide the cup with a screw-thread and construct either a rigid or yielding plunger adapted to be forced onto the grease by means of the thread. The cutting of the thread is somewhat expensive and the operation of removing the plunger to replenish the cup is necessarily somewhat tedious.

The object of our present invention is to provide a cheap, durable, and easily-operated cup which shall be capable of forcing effectively the grease or stiff oil in the desired quantity onto bearings.

WVith these ends in view our invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view of the cup in elevation, and Fig. 2 is a longitudinal section.

A represents a cylindrical cup, provided at its lower end with a threaded tap, a, for securing it to a box or bearing where it is to be employed. On the outside, at points diametrically opposite, the cup is provided with longitudinal lines or series of ratchet-teeth or notches B, inclined toward the lower end of the cup.

O is the top of the cover or plunger, to which is secured the upper end of a cylindrical shell, 0. The latter is adapted to fit closely and slide longitudinally within the cup A. At points on the rim of the top O,corresponding to the lines of ratchet-teeth or notches B, the upper ends or shanks of a pair of spring-hooks, D, are secured, the hooks resting in automatic engagement with the teeth or notches B. The shanks d of the hooks are sufficiently long to allow the hooks to engage the teeth or notches at the base of the cup when the top 0 reaches the top of the cup.

The joint between the shell cand the cup is airtight, the grease sufficing to hermetically seal any slight crevice which might occur between the two surfaces.

When the cup is filled with grease and the cover or plunger adjusted with the lower end of the shell 0 entering the top of the cup, an air-chamber is formed within the shell c'above the grease, and by simply pressing down on the cover the air is condensed above the grease and the cover automatically locked in de pressed adjustment by the hooks D, which slide freely over the teeth or notches in a downward direction. The expansive force of the compressed air will tend to force the grease out of the cup faster or slower in proportion to the compression of the air. As the volume of the grease decreases and the tension of the air becomes lessened, the said tension may be increased in a moments time by simply striking or pressing on the top of the cover and lowering the hooks one or more teeth or notches.

The cover or plunger may be removed in a moments time by simply givingit a partial turn suflicient to disengage the hooks D from the teeth or notches B, and then drawing it directly oft.

The teeth or notches B might be formed on separate bars or strips and secured to the outside of the cup, and several slight changes might be resorted to in the form and arrangement of the several parts described without departing from the spirit and scope of our invention; hence we do not wish to limit ourselves strietly to the construction herein set forth; but,

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a lnbricator, the combination, with a cup open at its upper end and provided with series of notched teeth or notches on its side, of a plunger closed at the top and open at the lower end and adapted to telescope within the cup, and provided with hooks adapted to engage the teeth or notches and lock the plungerin its adjustment on the cup, substantially as set forth.

2 In a lubricator, the combination, with a r cup open at its upper end and provided with series of teeth or notches on its sides,of a cover adapted to telescope within the cup, and provided with a pair of spring-hooks adapted to automatically engage the teeth or notches and lock the cover in depressed adjustment, substantially as set'forth,

3. In a lubricator having series of ratchettoothed notches on its sides, a cover provided with spring-hooks adapted to slide freely down over thenotches and automatically lock the cover against an upward movement, substantially as set forth.

4:. The combination,

with the cup of a lubricator, of a cover open at the bottom and closed at the top, and adapted to fit within the cup and form a chamber for compressed air, the said cover having hooks adapted to engage teeth or notches in the cup and lock the cover in depressed position, substantially as set forth.

In testimony whereof we havesigned this specification in the presence of two subscribing witnesses. 7

WILLIAM M. EVANS,

JOHN G. OORDNER.

Witnesses: V 7

JOHN H. WEIM, THOMAS DAVIES. 

